fix: Clean up blank lines in test_audit_expiry_urgency.py

Removed unnecessary blank lines in test_audit_expiry_urgency.py.

Author: santhosh-apphelix-2u

lms/djangoapps/experiments/tests/test_audit_expiry_urgency.py

@@ -68,15 +68,12 @@ def test_defaults_to_control_when_optimizely_unavailable(self):
 
     def test_reuses_variant_across_allowlisted_courses(self):
         user = None
-    
         enrollment_1 = CourseEnrollmentFactory.create(
             course=self.course_1,
             mode=CourseMode.AUDIT,
             is_active=True,
         )
-    
         user = enrollment_1.user
-    
         enrollment_2 = CourseEnrollmentFactory.create(
             user=user,
             course=self.course_2,